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23 July, 17:12

What is 70% of blank = 28

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  1. 23 July, 17:18
    0
    Percent means parts out of 100

    70%=70/100=7/10

    7/10 of x=28

    'of' means multiply

    7/10 x=28

    multiply both sides by 10/7 to get rid of fraciton

    x=40

    the number is 40
  2. 23 July, 17:25
    0
    Divide 28 by. 7 and you have your answer ... 40 ... simple algebra just get x (blank) by itself
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